Super Scribblenauts Unlimited
I picked this up yesterday and it is the funniest game I have played in a while. You can make anything you want from comfy sofas to nuclear bombs to Internet Memes (sadly the creators of Nyan Cat and Keyboard Cat are killjoys and suing the studio :( ).
The best I have created so far was a Zombie Keyboard Cat, a marching band went past, got turned to zombies and total bedlam unleashed in the level. Or one guy who wanted a bit of heat to keep his pizza warm, so I used a flamethrower...he might have died but the pizza was warm and I passed the task. ;)